pyflakes: ignore files marked no-check-code

revlog: compute correct deltaparent in the deltaparent function It now returns nullrev for chain base revisions, since they are conceptually deltas against nullrev. The revdiff function was updated accordingly.

changelog: fixes leaked file handle

setdiscovery: limit lines to 80 characters

subrepo: use code from 71ea5b2b9517 only if Python needs it (issue2795) With Python >= 2.6 the original code already works correct, therefore the fix for issue2556 on Python <= 2.5 broke relative subrepositories with newer versions of Python.

sslutil: extracted ssl methods from httpsconnection in url.py This makes it easier to share ssl cert validation with other http implementations.

check-code: fix checking for sh style in .t tests Restore checks after they were disabled by 64de9ca66511.

run-tests: add --shell command line flag This makes it easy to test with, say, both /bin/bash and /bin/dash instead of changing the system-wide /bin/sh.

run-tests: use type of default to convert environment variable Before, defaults could only be integers, they can now also be strings, floats and what have you.

test-treediscovery: fix escaping for both dash and bash A '\n' on the command line is turned into a newline by dash, but kept as-is by bash, which resulted in a syntax error in the config file. Luckily, dash wont turn '\n' into a newline when it is part of a here-doc, so we can write the config file using that technique.